Simultaneous Multislice pTx for Readout-Segmented Diffusion Imaging at 7 T

Williams, S. N. , Dragonu, I., Ding, B., Liebig, P. and Porter, D. A. (2022) Simultaneous Multislice pTx for Readout-Segmented Diffusion Imaging at 7 T. Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting, London, United Kingdom, 7-12 May 2022.

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Publisher's URL: https://index.mirasmart.com/ISMRM2022/PDFfiles/0453.html

Abstract

This abstract addresses the challenges of 7T diffusion MRI associated with shorter T2/T2* and inhomogeneous B1+ field by implementing simultaneous multislice (SMS) parallel-transmit (pTx) slice-by-slice shimming in a readout-segmented diffusion-weighted sequence, RESOLVE. The benefits of pTx were compared to conventional single-transmit circularly polarized (CP) mode both with and without SMS using a matched high-resolution diffusion protocol in the same healthy volunteer. Slice-by-slice shimming significantly improves signal homogeneity while SMS opens the door for improved scan efficiency. The simplicity of slice-by-slice shimming and sequence integration makes this a practical solution for routine 7T imaging.

Item Type:Conference or Workshop Item
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Liebig, Patrick and Williams, Dr Sydney and Porter, Professor David and Ding, Ms Belinda
Authors: Williams, S. N., Dragonu, I., Ding, B., Liebig, P., and Porter, D. A.
College/School:College of Medical Veterinary and Life Sciences
College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Research Group:Imaging Centre of Excellence
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